Greater London · England
Glazing Silicone in Friern Barnet
Professional glazing silicone in and around Friern Barnet, with every bit of old sealant taken out first and a 12-month guarantee.
- Leaks where conservatory glass meets the frame
- Stained, discoloured glazing silicone
- Water tracking down the inner face of the glass
Glazing silicone in Friern Barnet, done properly
Cracked, stained or lifting silicone on glass looks poor and can leak. It comes off cleanly, without marking the glass and reseal the joint. Common call-outs are for water escaping where a screen meets the wall and water running down inside the glass, across rooflights, glass balustrade bases and glass-to-glass joints.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, letting in draughts and water.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Place
- Friern Barnet (N11, N12, N10, N20)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What we’re called out for in Friern Barnet
New silicone over old silicone will not bond. Many failed joints we see have been topped up rather than cut out leaving a path for water.
The problems people normally mention when they call are:
- Failed sealant around rooflight glass
- Sealant that was laid over old silicone and failed
- Mouldy sealant around glass panels
- Glazing silicone that has cracked or come away
Homes close to St John's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- Who does the work, and how experienced they are
- Whether you can choose the colour
- How long to leave it before use
- How the joint is cleaned and prepared
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Squeegee the shower screen after each use
- Use a gentle glass cleaner and a soft cloth
- Use gentle products around the joints
- Avoid scraping close to the bead
Keep conservatory gutters clear, so water drains away from the joints. Blocked gutters can push water where it shouldn’t go.
Cracked glazing silicone means the joint has failed. Resealing now is a small job compared with fixing water damage later.
Honest limits
Before you book, it’s worth knowing the limits:
- Leaks from the roof covering or flashing (a roofer’s job)
- Condensation trapped between two panes
- Rotten or badly damaged frames
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before booking.
Surfaces we seal
- Shower screens
- Glass-to-frame joints
- Glass balustrade bases
- Conservatory frames
- Glass-to-glass joints
- Rooflights
How the job changes by surface
Glass-to-frame joints
Old sealant is removed carefully from the glass and reseal with glazing silicone.
Shower screens
Mouldy or lifting sealant on a screen leaks. A full reseal sorts it.
Landlord and commercial work in Friern Barnet
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
FAQs for Friern Barnet
Can parking be tricky for a visit in Friern Barnet?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you help a landlord with a rental near New Southgate station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Is a special sealant needed for glass?
We use a neutral-cure glazing silicone suited to glass and the frame. In bathrooms, we use anti-fungal silicone.
How long does glazing silicone take?
That depends on how much there is to do, but most jobs take a few hours, depending on how many joints need doing. We will tell you when we quote.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Do you seal glass balustrade bases?
Yes, where the base is finished with sealant. Send us photos and we’ll take a look.
Do you come to Friern Barnet?
Yes. We’re based in Crawley and work across South East England, London and Scotland.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Places near Friern Barnet
Also in Friern Barnet
Friern Barnet homes and the weather
With historic houses such as Heath Hall (about 2.7 miles south) nearby, there’s older building stock in the area around Friern Barnet as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Friern Barnet is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you look after a building such as Holly Park Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Friern Barnet is about 2 miles north-east of Finchley, in Greater London. For glazing silicone in and around Friern Barnet, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Greater London from our Crawley base. Our Greater London coverage runs to 764 places, and Friern Barnet is one of them. Our London page covers work nearby (8 miles or so).
Here we cover the N11, N12, N10 and N20 postcode area for glazing silicone. If you need glazing silicone at a property on Martock Gardens, Shapwick Close and Radstock Close or a nearby road, we can help. You’ll find Friern Barnet on the A406 and B550, which makes it straightforward to reach. Neighbouring places we cover for glazing silicone include New Southgate (1 mile east), Brunswick Park (1 mile north), North Finchley (1 mile west), Arnos Grove (1 mile east) and Whetstone (1 mile north-west). We also work in nearby towns such as London (8 miles south), City of Westminster (7 miles south), Marylebone (7 miles south), Kensington (8 miles south), St Pancras (6 miles south) and Shoreditch (7 miles south-east).
What’s near Friern Barnet
We work in homes and buildings around Francis Skaryna Belarusian Library and Museum, Friary Park and Friern Barnet School. There’s a railway station in Friern Barnet itself: New Southgate station. A little further out are Francis Skaryna Belarusian Library and Museum (1.4 miles west) and Grand Arcade (1 mile west). Green spaces nearby include Highgate Hill and Darland's Lake.
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours, depending on how many joints need doing. In Friern Barnet, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- First we agree the joints to be done.
- We cut away the failed silicone.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
How to prepare
- Keep pets and children clear of the area while we work
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or send us an email.
Related advice
Why it’s worth doing now in Friern Barnet
Glazing joints need a sealant made for the job. A general-purpose tube may not bond well or may react with the frame, so we use neutral-cure glazing silicone. In a flat in Friern Barnet, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why Friern Barnet customers choose us
- Anti-fungal silicone where joints get wet
- 20+ years of sealant experience
- We never seal over old sealant
- A sealant colour to suit the surroundings
Read our cost guide and customer reviews.